Multi-pass rolling method and multi-path rolling-mill stand for

Details Multi-pass rolling method and multi-path rolling-mill stand for Multi-pass rolling method and multi-path rolling-mill stand for

1986-03-27

1988-07-26

Spruill, Robert L.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72 11, 72 16, 72 20, 72 21, 72 37, 72232, 72243, 72245, B21B 1304, B21B 378, B21B 3132

Patent

active

047592052

ABSTRACT:
A multi-pass rolling method which permits a multi-pass rolling-mill stand to perform multi-path rolling and still stabilize the rolling operation by preventing lateral deviation movement of a metal workpiece being rolled. The rolling-mill stand has three or more work rolls arranged one above the other and the workpiece is simultaneously rolled at two or more points by at least one of the work rolls. Directly or indirectly roll gaps are detected on the work and drive sides of at least one pass by sensors. A difference signal from the output signals of the sensors is obtained thereby determining a roll gap difference. Control devices are provided which are responsive to the difference signal for independently changing the roll gaps on the work and drive sides.

REFERENCES:
patent: 4382375 (1983-05-01), Yamamoto et al.
patent: 4478064 (1984-10-01), Brennemann

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